Wall-paper-printing machine



(No Model.) 4 SheetsSheet 1.

W. H. WALDRON. WALL PAPER PRINTING MACHINE.

No. 531,076. Patented Dec. 18, 1894.

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(No Model.) 4 Sheets-Sheet 2.

WE. WALDRON.

WALL PAPER PRINTING MACHINE. No. 531,076. Patented Dec. 18, 1894.

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(No Model.) 4 sheets-sheet a.

W. H. WALDRON.

WALL PAPER PRINTING MAGHINB.

No. 531,076. Patented Dec. 18, 1894.

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INVENTOH (No Model.) 4 Sheets-Sheet 4.

W. H. WALDRON. WALL PAPER PRINTING MACHINE.

No. 531,076. Patented Dec. 18, 1894.

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UNITED STATES PATENT OFFICE.

WALVL-PAPER-"PRINTING AMACHINE.

SPECIFICATION forming part of Letters Patent No. 531,076, dated December 18 1894. Application filed June 2,1894- Serial No, 513,239. (N model.)

- the second printing cylinder is automatically controlled, to cause the second machine to accurately print or emboss the paper accord-,

- ing to the design already printed on the paper by the first machine, and irrespective of the shrinkage or expansion of the paper caused by the intermediate drying apparatus.

The invention consists of an electrically controlled compensating device, for regulating the speed of the printing rollers'of the second machine, according to the expansion and contraction of the papercaused by the first printing and the subsequent heating of the paper.

The invention also consists of certain parts and details, and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a diagrammatic side elevation of a two-cylinder wall paper printing ma:

chine, with an intermediate drying apparatus.

Fig. 2 is an end elevation of the compensating device as: applied on the second machine. Fig. 3 is a plan'view of the same. Fig. 4:.is an enlarged sectional elevation of part of the electric compensating device. Fig. 5 is a plan view of part of the paper. Fig. 6 is an enlarged sectional side elevation of part of the compensating mechanism, on the line 6-6 in Fig. 7. Fig. 7 isa transverse section of the same, and Fig. 8 is a side elevation of the second machine.

' As illustrated in Fig. 1, the paper A unwinds from a roll B and passesthrough a wall paper printing machine 0 of the usual construction, having a cylinder and a series of printing rollers, each fed from a suitable fountain in the usual manner, to successively receive a ground and the several colors individually applied to form the first design. The paper passes from the cylinder of this wall paper printingmachine C, to and through the drying apparatus D of any approved construc'tion, preferably consisting of movable belts heated by steam, as indicated in Fig. 1.

The paper, after it has been dried so as to prevent blurring of the design already printed thereon,is passed to asecond wall paper printing machine E, to receive thelast impressions before passing to a second drying apparatus D, and to the lath. supporting device D for hanging the paper up for the final drying.

The Wall paper printing machine 0 is designed more especially for printing a design in the ordinary colors on the paper A, and the Wall paper printing machine E is for the purpose of adding additional colors, gold, bronze or similar material to the design already printed on the paper by the'first machine C.

The paper is subjected to the drying process between the impressions of the machines 0 and E, to permit of sufficiently drying the first impression'before the second impression is made, so as not to blur the original design. Now, it will be seen that the paper betweenthe first and second'wall paper printing machines O and E, will undergo considerable change, so that the printing rollers E of the second Wall paper printing machine E will not, at all times, register with the design printed on the paper by the first wall paper printing machine 0. In order to compensate for this irregularity, caused by the expansion or contraction of the paper while passing from .the first machine 0 to the second machine E, it is necessary to provide a-compensating device which regulates the speed of the printing rollers E according to the design on the traveling paper A, and independently of the speed of the cylinder E of the said second Wall paper printing machine E.

In my application for Letters Patent for a wall paper printing machine, Serial No. 510,462, filed by me May 8,'1894, I described a mechanical compensating device for controlling the speed of the printing rollers E of the second machine E, but this compensating device is actuated by an operator watching the paper(having al ready an imprint from the first machine) as it passes to the cylinder and the printing rollers of the second machine. In the compensating device presently to be described, I dispense with the service of the above mentioned operator, and control and actuate the compensating device automatically by the paper A according to the shrinkage or expansion of the latter due to the first printing and drying.

The paper A to be printed on is formed on one or both selvage edges with apertures A placed equal distances apart, as shown in Fig. 5. The apertures A may be formed by separate special machines before the paper is wound upon the roll B, or the apertures may be produced by a suitable punching device C, arranged as a part of the first wall paper printing machine 0, and in advance of the first printing roller 0 as illustrated in Fig. 1.

The paper A, after leaving the drying apparatus D, and before passing upon the cylinder E of the second machine E, passes over a roller F, held loosely on a shaft F journaled in suitable bearings in the frame of the machine E. One end of the shaft F is provided with a gear wheel F in mesh with an intermediate gear wheel F in mesh with the large gear wheel 11, for driving the printing rollers E in the usual manner. This gear wheel II is arranged next to the cylinder E but is mounted on a stud in alignment with the shaft of the cylinder E The gear wheel 11 has the same speed as the cylinder E as long as the design on the paper registers with the designs on the printing rollers E, but whenever there is a discrepancy in registering the printing rollers E with the design already on the paper, then the said gear wheel H is rotated at a higher or a lower rate of speed so as to drive the printing rollers E accordingly, to match the design on the paper with the design on the printing rollers C. For this purpose a compensating device is used, consisting principally of the transmitting gear wheel H for the printing rollers E, and an auxiliary driving mechanism for increasing or diminishing the speed of the said transmitting gear wheel H and a shifting device for connecting and disconnecting the said transmitting gear and the said speed and auxiliary driving mechanism. The auxiliary driving mechanism, as well as the transmitting gear wheel II for revolving the printing rollers at the proper rate of speed relative to the pattern or design already printed on the paper by the first machine, are similar to the ones shown and described in the application above referred to, but instead of a lever, under the control of the operator, for changing the gear from the normal to another rate of speed, I provide an electromagnetic shifting device controlled automatically from the paper A, such device being provided with a wheel G, formed on its periphery with lugs G adapted to engage the apertures A of the paper A, as the latter passes over the roller F, the said wheel G being arranged alongside the roller F, and loosely journaled with its hub G on the shaft F. On the hub G is secured a radially extending shaft G mounted to turn in the hub and pressed on by a spring G see Fig. l, the upper or outer end of the said shaft carrying a wing G adapted to make contact with a wing G held on a shaft G likewise pressed on by a spring G and journaled in a hub G? secured on the shaft F. The hubs G and G are insulated from the shaft F. The springs G and G hold the wings and G in contact with each other, but permit the wings to yield whenever their corresponding shaft has a faster movement and a wing pushes on its opposite mate. Now, as long as the paper registers by its apertures A with the lugs G of the wheel G, and the latter rotates at the same rate of speed as the shaft F driven from the gear wheel II, then the wings G and G are in contact with each other, but when the apertures A are brought nearer together by shrinkage of the paper, then the speed of the wheel G is accelerated and consequently causing the wing G to move away from the wing G", thus breaking the contact between the two wings. A similar operation takes place when the paper has expanded, but then the wheel G is retarded, and the wing G moves past and away from the wing G The lugs G owing to their conical shape readily enter the apertures A even when the distance between two successive lugs is slightly greater or less than the distance between adjacent apertures A, it being, however, understood that the apertures A are originally punched a distance apart corresponding to the distance between successive lugs G on the wheel G. The hubs G and G are engaged by contact plates I and I, held insulated on a rod 1 and connected by Wires I and I with a relay I and a battery 1 connected by wires 1 and l with an electromagnet J supported in a suitable bracket forming part of the main frame of the machine E. See Fig.2. The armature lever J for this magnet J, forms at its upper end a shifting fork J engaging the hub K of a gear wheel K mounted to turn with and to slide on a shaft K journaled in suitable hearings on a bracket forming part of the main frame of the machine, the said shaft K being driven by the differential speed and auxiliary driving mechanism hereinafter more fully described.

The gear wheel K is in mesh with a gear Wheel L mounted to rotate loosely on a sleeve N secured on the driving shaft 0 extending transversely and provided at one outer end with a pulley 0 connected by belt with suitable machinery for imparting a rotary motion to the said shaft 0. On the latter is also secured a gear wheel 0 in mesh with the large gear wheel E secured on the shaft of the cylinder E to rotate the latter from the shaft 0. A gear wheel 0 held on the shaft 0, next to the gear wheel 0 meshes into a large gear wheel E for driving the sieve cloths for furnishing the colors to the impression rollers E. On the'wheel L is formed or secured a bevel gear wheel L, in mesh with a bevel gear wheel Q mounted to rotate on a stud N forming part of the sleeve N. On the top of this bevel gear wheel Q is formed or secured a spur wheel Q in mesh with a pinion R secured on a shaft R journaled in suitable bearings formed on the sleeve N, as plainly illustrated in Fig. 6. On this shaft R is secured a worm R in mesh with aworm wheel P formed on the hub of the gear wheel P mounted to rotate loosely on the sleeve N, and in mesh with the gear wheel H. Now, when the gear wheel K is in mesh with the gear wheel L and the shaft 0 is rotated, then the latter 'givesa revolving motion to the. sleeve N, so that the shaft R journaled in the sleeve is carried around and by the worm R locked in the worm wheel P, rotates the latter on thesleeve N,- and consequently rotates the gearwheel P in mesh with the gear wheel H, to rotate the latter and the printing rollers.

The gear wheels K and L are not in mesh aslong as the electro magnet J does not attract its lever J, that is, as long as the wings G and G are in contactwith each other, and proper printing of the paper takes. place at the cylinder E and the printing rollers E. As a rule, the pattern or design when coming to the second machine E-is long, and consequently, the printing rollers'E have to run slower than the normal rate to permit a corresponding longer pattern to register with the pattern already on the paper. 'N ow, whenever the paper has expanded, then the wheel Grotates slower and breaks the contact between the wings G and G thus breaking the, circuit on the relay to close the circuit for the magnet J to attract the armature lever J to shift the gear wheel K in mesh with the gear wheel L.

When the gear wheel K is out of mesh with the wheel L, then the rotary motion of the shaft Ois transmitted by its fixed sleeve vN, carrying around the stud N, gear wheel Q, pinion R, shaft R, and the worm R locked with the worm wheel P, to the gear wheel P, and to the wheel H'driving the printing rollers. Whenever the pattern or design again runs properly relative to the printing rollers E, then the wheel G is in its ncrmalposition, so that its wing G5 is again in contact with the wing G to close the circuit for the relay to break the circuit for the magnet, and to cause the magnet F to release'the lever J so that the gear wheel K is again thrown out of. mesh with the gear wheel L. r

The normal result of driving the transmitting gear wheel H by the pinion P on the shaft 0 is that the surface speed of the printin g rollers E is the same as the surface speed of the large cylinder E paper runs and which is driven from the around which the V shaft 0 as previously explained; the size of I the -gear wheels, E and 0 being such as to produce this result.

The shaft K carrying the gear wheel K is driven by a differential speed mechanism S from the shaft T, carrying a pinion T, in mesh with the large gear wheel E secured on the cylinder E so that the shaft T is driven from the gear wheel E. On one end of the shaft T is secured a friction disk T engaged on its faces by oppositely arranged friction wheels U and U journaled in a frame U fitted to slide longitudinally on a bracket forming part of the main frame for the machine E. The frame U is adapted to be shifted longitudinally by the operator, and for this purpose a screw rod U screws in the said bracket and engages. the frame U so as to move the latter longitudinally whenever the operator turns the hand wheel U on the screw rod U Oppositethe friction wheels U and U are held a second set of friction wheels U and U respectively, engaging the faces of a friction disk K ment causes a faster or a slower rotation of v the gear wheels K, L, L, Q, Q and R, whereby the shaft R, worm R worm wheel P and gear wheel P are caused to rotate slower or faster, thus causing the gear wheel H to rotate slower or faster on account of being in mesh with the gear wheel P. Itis understood that when the operator, for instance turns the hand wheel U so as to shift the frame U to .the right,'then the disk T is engaged'nearer its center by the set of friction wheels U and U, and the other friction wheels U U move farther out from the center of their friction disk K By this movement a slower rotary motion is given to the set of friction wheels U, U, U and U and a slower motion to the disk K and the gearing connected therewith at its shaft K so that the gear wheel H r0- tates slower to turn the printing rollers at a rate of speed to force their designs to soon register with the design already printed on the wall paper before it reaches the printing machine E. By turning the hand wheel U in the opposite direction, a reverse movement of V the several parts takes place, that is, the gear wheel H and the printing rollers E are rotated faster to properly register with the design.

It is expressly understood that as long as the gear wheel K is in mesh with the gear wheel N, the transmitting gear wheel drives the gear wheel H and the printing rollers E at a rate of speed difierent from that of the shaft 0, but when the electro magnetic shifting device, controlled from the paper, at the time proper printing of the paper takes place and the circuit is closed at the now contacting wings G G, then the gear wheel K is thrown out of mesh with the gear wheel L and the transmitting gear rotates the gear wheel 11 and the printing rollers E at the normal rate of speed and in unison with the cylinder E The normal position of the wing G relative to the wing G is regained by throwing the auxiliary driving mechanism into action and m thereby accelerating or retarding the motion of the gear wheel 11 which drives the intermediate gear wheels F F 2 of which the latter is attachedto the shaft F, carrying the wing G. The consequent accelerated or retarded motion of the shaft F finally brings the wings G and G6 in contact and then the gear wheel K of the auxiliary driving mechanism is thrown out of mesh with the gear wheel L, by the action of the electromagnetic shifting device as above explained.

The speed of the gear wheel K can be regulated at any time by the operator shifting the position of the friction wheels U U, U and U relative to their friction disks T and K so that any desired differential speed can be given to the impression rollers relative to the speed of the cylinder E It is understood that this difierential speed mechanism is usually adjusted but once when first starting the machine, as the speed of the impression rollers E is afterward automatically controlled by the electric arrangement above described and controlling the compensating mechanism in the manner previously set forth.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A wall paper machine of the class described, provided with a compensating device for driving the printing rollers at a higher or lower rate of speed, the said compensating device comprising a driven transmitting gear wheel for rotating the printing rollers, an auxiliary driving mechanism for the said transmitting gear wheel to increase or decrease the latters speed, and an electro magnetic shifting device for connecting and disconnecting the said transmitting gear wheel and the said auxiliary driving mechanism, substantially as described.

2. A wall paper machine of the class described provided with a compensating device for driving the printing rollers at a higher or lower rate of speed, the said compensating device comprising a driven transmitting gear wheel for rotating the printing rollers, an auxiliary driving mechanism for the said transmitting gear wheel to increase or decrease the latters speed, an electro-magnetic shifting device for connecting and disconnecting the said transmitting gear wheel and the said auxiliary driving mechanism and a circuit breaker for controlling the said electro-magnetic shifting device, and controlled from the paper to be printed, substantially as described.

3. A wall paper printing machine of the class described, provided with an electro magnetic shifting device comprising a shifting lever, an electro magnet adapted to attract and release the said shifting lever, a circuit breaker in the circuit for the said electro magnet, the said circuit breaker including rotary parts closing the circuit when driven at a corresponding speed, and breaking the circuit when traveling at a diiferent rate of speed, substantially as shown and described.

t. A wall paper printing machine provided with a circuit breaker comprising a driven shaft, a spring-pressed wing held movable on the said shaft, a wheel driven from the traveling wall paper, a second spring-pressed wing, adapted to contact with the said first named wing and held movable on the said wheel, and an electric circuit connected with the said wings, substantially as described.

WILLIAM H. WALDRON.

Witnesses:

THEO. G. Hosrnn, F. W. HANAFORD. 

